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1 | # Sample Makefile to build simple project. |
2 | # | |
3 | # This Makefile expect all source files (.c) to be at the same level, in the | |
4 | # $(SRC_PATH) directory. | |
5 | # | |
6 | # This Makefile expect all embedded library source files (.c) to be at the same level, in the | |
7 | # $(LIBRARY_PATH) directory. | |
8 | # | |
9 | # It will automatically generate dependencies, compile all files, and produce a | |
10 | # binary using the provided name linked against the library if necessary. | |
11 | # | |
12 | # Set BINARY_NAME to the name of the binary file to build. | |
13 | # Set LIBRARY_NAME to the name of the library file to build. | |
14 | # The default path for the library code and object is lib. | |
15 | # By default the linker will look for $(BINARY_NAME) library name. | |
16 | # Set BUILD_TYPE to either debug or release. | |
17 | # | |
18 | # Automatic dependencies code from: | |
19 | # http://make.mad-scientist.net/papers/advanced-auto-dependency-generation/#tldr | |
20 | BINARY_NAME=exo2 | |
21 | SRC_PATH:=src | |
22 | LIBRARY_NAME=libexo2 | |
23 | LIBRARY_PATH:=lib | |
24 | LDLIBS=-lncurses -ltinfo | |
25 | BUILD_TYPE=debug | |
26 | #BUILD_TYPE=release | |
27 | ||
28 | # ==================================== | |
29 | # DO NOT CHANGE STUFF BEYOND THIS LINE | |
30 | # ==================================== | |
31 | ||
32 | all: $(BINARY_NAME) $(BINARY_NAME).dynamic $(BINARY_NAME).static | |
33 | ||
34 | CC=gcc | |
35 | LD=gcc | |
36 | AR=ar | |
37 | ||
38 | WARN_FLAGS = -Wall -Wextra | |
39 | STD_FLAG = -std=c11 | |
5d640630 | 40 | UNAME := $(shell uname -o) |
7515f897 JB |
41 | |
42 | ifeq ($(BUILD_TYPE),debug) | |
43 | BUILDDIR := .build/debug | |
44 | DEBUG_FLAG = -g | |
45 | STRIP_FLAG = | |
46 | OPTI_FLAG = -O0 | |
47 | LTO_SUPPORT = yes | |
48 | GOLD_SUPPORT = yes | |
49 | else | |
50 | BUILDDIR := .build/release | |
51 | DEBUG_FLAG = | |
52 | STRIP_FLAG = -s | |
53 | OPTI_FLAG = -O3 | |
54 | LTO_SUPPORT = yes | |
55 | GOLD_SUPPORT = yes | |
56 | endif | |
57 | ||
5d640630 JB |
58 | ifeq ($(UNAME),Cygwin) |
59 | GOLD_SUPPORT = no | |
60 | endif | |
61 | ||
7515f897 JB |
62 | ifeq ($(LTO_SUPPORT),yes) |
63 | CFLAGS_LTO = -flto -ffat-lto-objects | |
64 | LDFLAGS_LTO = -fuse-linker-plugin -flto | |
65 | endif | |
66 | ||
67 | ifeq ($(GOLD_SUPPORT),yes) | |
68 | LDFLAGS_GOLD = -fuse-ld=gold | |
69 | endif | |
70 | ||
71 | # Putting header files in the source directory is not the purpose of this INCLUDES variable | |
72 | INCLUDES := $(INCLUDES) -I$(LIBRARY_PATH) | |
73 | CFLAGS := $(CFLAGS) $(CFLAGS_LTO) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG) $(INCLUDES) | |
74 | LIBCFLAGS := -fPIC $(CFLAGS) | |
75 | LDFLAGS := $(LDFLAGS) $(LDFLAGS_LTO) $(LDFLAGS_GOLD) $(STRIP_FLAG) | |
76 | LIBLDFLAGS := -shared $(LDFLAGS) | |
77 | STATICLIBLDFLAGS := -static $(LDFLAGS) | |
78 | LDLIBS := $(LDLIBS) -L$(LIBRARY_PATH) -l$(BINARY_NAME) | |
79 | ||
80 | OBJDIR := $(BUILDDIR)/objs | |
81 | $(shell mkdir -p $(OBJDIR)) | |
82 | ||
83 | SRCS=$(wildcard $(SRC_PATH)/*.c) | |
84 | LIBSRCS=$(wildcard $(LIBRARY_PATH)/*.c) | |
85 | OBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(SRCS))) | |
86 | LIBOBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(notdir $(LIBSRCS))) | |
87 | ||
88 | DEPDIR := $(BUILDDIR)/deps | |
89 | $(shell mkdir -p $(DEPDIR)) | |
90 | DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$(notdir $*).Td | |
91 | POSTCOMPILE = mv -f $(DEPDIR)/$(notdir $*).Td $(DEPDIR)/$(notdir $*).d | |
92 | ||
93 | $(LIBRARY_PATH)/$(LIBRARY_NAME).a: $(LIBOBJS) | |
94 | @echo "[AR StO] $@" | |
95 | @$(AR) rcs $@ $^ | |
96 | ||
97 | $(LIBRARY_PATH)/$(LIBRARY_NAME).so: $(LIBOBJS) | |
98 | @echo "[LD ShO] $@" | |
99 | @$(LD) $(LIBCFLAGS) $(LIBLDFLAGS) $^ -o $@ | |
100 | ||
101 | #$(BINARY_NAME): $(OBJS) $(LIBOBJS) | |
102 | # @echo "[LD ] $@" | |
103 | # @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ | |
104 | ||
105 | $(BINARY_NAME): $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a | |
106 | @echo "[LD ] $@" | |
107 | @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ | |
108 | ||
109 | $(BINARY_NAME).static: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).a | |
110 | @echo "[LD ] $@" | |
111 | @$(LD) $(CFLAGS) $(STATICLIBLDFLAGS) $^ $(LDLIBS) -o $@ | |
112 | ||
113 | $(BINARY_NAME).dynamic: $(OBJS) $(LIBRARY_PATH)/$(LIBRARY_NAME).so | |
114 | @echo "[LD ] $@" | |
115 | @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ | |
116 | ||
117 | $(OBJDIR)/%.o: $(SRC_PATH)/%.c $(DEPDIR)/%.d | |
118 | @echo "[C ] $(notdir $*)" | |
119 | @$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@ | |
120 | @$(POSTCOMPILE) | |
121 | ||
122 | include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS)))) | |
123 | ||
124 | $(OBJDIR)/%.o: $(LIBRARY_PATH)/%.c $(DEPDIR)/%.d | |
125 | @echo "[C ] $(notdir $*)" | |
126 | @$(CC) $(DEPFLAGS) $(LIBCFLAGS) -c $< -o $@ | |
127 | @$(POSTCOMPILE) | |
128 | ||
129 | include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(LIBSRCS)))) | |
130 | ||
131 | $(DEPDIR)/%.d: ; | |
132 | ||
133 | .PRECIOUS: $(DEPDIR)/%.d | |
134 | ||
135 | #FIXME: add an install target | |
136 | ||
137 | clean: | |
138 | @echo "[CLN]" | |
139 | -@rm -r $(BUILDDIR) | |
140 | -@rm $(BINARY_NAME) | |
141 | -@rm $(BINARY_NAME).static | |
142 | -@rm $(BINARY_NAME).dynamic | |
143 | -@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).a | |
144 | -@rm $(LIBRARY_PATH)/$(LIBRARY_NAME).so | |
145 | ||
146 | disassemble: $(BINARY_NAME) | |
147 | objdump -d $< | less | |
148 | ||
149 | symbols: $(BINARY_NAME) | |
150 | objdump -t $< | sort | less |